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100 mL of M Sucrose Solution - what is the formula weight of sucrose and how much sucrose is needed to make 1 L of 1M sucrose?
-then-
how much is needed to make 100mL?
2007-10-18 08:27:51 · 4 answers · asked by LydonPuggles 2 in Science & Mathematics ➔ Chemistry
342.3 is the approximate formula weight of sucrose. To make 1 liter of 1M sucrose you would dissolve 342.3 grams of sucrose in a total volume of 1000 ml (1 liter)
To make 100 ml of 1M sucrose, it would simply be 1/10 the amount, since 100 mls is 1/10 of one liter. So, you would dissolve 34.24 grams of sucrose in a total volume of 100 mls water.
I hope you understand how this is done, and aren't just copying the answer for your homework. We won't be around to help you on the test.
2007-10-18 08:36:29 · answer #1 · answered by Simonizer1218 7 · 0⤊ 1⤋
Atomic weights: C=12 H=1 O=16 C12H22O11=342
Add 342g sucrose to the container and fill up to 1L with stirring.
Use 34.2g sucrose and fill upto 100mL.
2007-10-18 08:35:22 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋
The formula for sucrose is C12H22O11 which gives a formula mass of 342g/mol. Hence 342g of sucrose will be needed to make 1L of a 1M solution.
34.2g will be needed to make 100 mL.
2007-10-18 08:39:56 · answer #3 · answered by haile d 3 · 0⤊ 0⤋
C12H22O11
Find Molar Mass by adding up the atomic mass of each element x the number of atoms of that element. The Formula Weight (Molar Mass) is the mass of one mole.
Put that mass into a liter container, and add water up to the line.
For 100mL, use 0.1 mol/100mL
2007-10-18 08:37:00 · answer #4 · answered by papastolte 6 · 1⤊ 0⤋